5-page primer from NACDL’s Fourth Amendment Center that prepares attorneys to litigate a motion to suppress a geofence warrant.
Reports and Publications
Toolmark-Comparison Testimony: A Report to the Texas Forensic Science Commission
To assist the Texas Forensic Science Commission in a pending review of traditional toolmark-comparison testimony, the Yale Law School Forensic Science Standards Practicum submitted this report on the range of approaches that courts, legal commentators, and scientists have proposed for presenting toolmark-comparison evidence in trial settings. The report addresses four major topics: (1) the case …
Toolmark-Comparison Testimony: A Report to the Texas Forensic Science CommissionRead More
Statement of the TX Forensic Science Commission Regarding “Alternate Firearms Opinion Terminology”
Dec. 2021 statement Addressing a USDOJ document that instructs firearms examiners to avoid using terminology such as the weapon “could have fired” the bullets or cartridge cases, “consistent with” or “could not be excluded” as having fired the bullets or cartridge cases.
SDPD Crime Laboratory – Forensic Biology Unit, Validation of the STRmixTM Software MCMC Markov Chain Monte Carlo
Procedure for Analysis Interpretation of STR DNA Profiles
NC State Crime Lab
Procedure for Analysis Interpretation of STR DNA ProfilesRead More
DNA Mixture Interpretation: A NIST Scientific Foundation Review
By: John M. Butler, Hari Iyer, Rich Press, Melissa K. Taylor, Peter M. Vallone, & Sheila Willis
DNA Mixture Interpretation: A NIST Scientific Foundation ReviewRead More
NIST Publishes Review of DNA Mixture Interpretation Methods
The National Institute of Standards and Technology (NIST) published a draft report, DNA Mixture Interpretation: A Scientific Foundation Review, which reviews the methods forensic laboratories use to interpret evidence containing a mixture of DNA from two or more people.
NIST Publishes Review of DNA Mixture Interpretation MethodsRead More
Digital Forensics Resource Packet for Legal Professionals
This resource contains sample subpoena and evidence preservation language for various types of digital evidence.
Digital Forensics Resource Packet for Legal ProfessionalsRead More
Jan. 13, 2021 Statement of US Department of Justice on the PCAST Report
The US DOJ published a statement on the Sept. 2016 President’s Council of Advisors on Science and Technology (PCAST) Report, Forensic Science in Criminal Courts: Ensuring Scientific Validity of Feature-Comparison Methods. The DOJ explains its disagreements with the 2016 report in the statement. In summary, the DOJ’s position is that: Traditional forensic pattern examination methods—as currently practiced—do not belong …
Jan. 13, 2021 Statement of US Department of Justice on the PCAST ReportRead More
A Simplified Guide to Trace Evidence
Tiny fragments of physical evidence such as hairs, fibers from clothing or carpeting, or pieces of glass are examples of trace evidence, and can be transferred when two objects touch or when small particles are disbursed by an action or movement. This evidence can be used to reconstruct an event or indicate that a person …
Fire Research: Identifying Ignitable Liquids in Debris and Providing Error Rates to Strengthen Testimony
With funding from the NIJ, Dr. Michael Sigman and Mary Williams from University of Central Florida developed a method for analyzing fire debris samples that are highly contaminated with pyrolysis interferences. This technique provides an alternative objective method for classifying ignitable liquid residues, which is one of the only viable options for helping to progress …
OSAC Registry Approved Standards
Organization of Scientific Area Committees for Forensic Evidence (OSAC) is developing documentary standards for each forensic discipline. Standards under consideration as well as approved standards are available in the OSAC Registry.
American Academy of Forensic Sciences Standards Board Documents
The AAFS Standards Board develops documentary standards for forensics through a consensus process, involving participation by all directly and materially affected persons. Standards are being developed for each forensic discipline. The standards that have been published are available on the ASB website.
American Academy of Forensic Sciences Standards Board DocumentsRead More
State of Michigan Governor’s Task Force on Child Abuse and Department of Health and Human Services: Forensic Interviewing Protocol
State of Michigan Governor’s Task Force on Child Abuse and Neglect and DHHS (2015). Forensic Interviewing Protocol (4th ed.)
Structured forensic interview protocols improve the quality and informativeness of investigative interviews with children: A review of research using the NICHD Investigative Interview Protocol
Lamb, M., Orbach, Y., Hershkowitz , Esplin,P ., Horowitz, I. (2007 ). A structured interview protocol improves the quality and informativeness of investigative interviews with children: A review of research using the NICHD investigative interview protocol. Child Abuse and Neglect. 31, 1201 1231.